A decade ago, Colombian teacher Luis Soriano was inspired to spend his weekends bringing a modest collection of precious books, via two donkeys, to the children of Magdalena Province's poor and violence-ridden interior. As Soriano braves armed bands, drug traffickers, snakes and heat, his library on hooves carries an inspirational message about education and a better future for Colombia.

In this clip from 'Enemies of the People,' Nuon Chea, also know as Brother Number 2, describes the decision made by Pol Pot and himself to eliminate perceived "traitors" under the Khmer Rouge regime. Always putting the nation before the individual, he thinks his course of action was necessary for Cambodia.

Filmmaker Rob Lemkin sits down with Geoffrey Smith, whose films "The English Surgeon" and "Presumed Guilty" premiered on POV, to talk about "Enemies of the People." Lemkin describes how he met his co-director, Thet Sambath, and Sambath's unique way of gaining the trust of the Khmer Rouge killers for the film.

In this clip from 'Enemies of the People,' journalist Thet Sambath sits down with three former Khmer Rouge officials to ask them about their actions in the "killing fields." Sister Em, Khoun and Suon describe the chain of command in the Khmer Rouge regime, and the necessity of carrying out orders in order to survive the Khmer Rouge years.

The Khmer Rouge slaughtered nearly two million people in the late 1970s. Yet the Killing Fields of Cambodia remain largely unexplained. Until now. Enter Thet Sambath, an unassuming, yet cunning, investigative journalist who lost his family in the conflict and spends a decade gaining the trust of the men and women who perpetrated the massacres.

Thet Sambath, one of the filmmakers behind 'Enemies of the People,' interviews former Khmer Rouge killers. The two men take Sambath to the fields where they did most of their killing, confess to their crimes and describe their current feelings about their past actions.

Thet Sambath embarked on a project to interview former Khmer Rouge leaders about the "killing fields." In this clip from 'Enemies of the People,' Sambath remembers when Khmer Rouge officials killed his father.

In this clip associated with the "Sweetgrass" lesson plan, sheep are sheared in early spring to prepare for the trek to summer pasture in the mountains.

In this clip from "Sweetgrass," a farmer tries to convince a ewe to accept an orphan lamb as her own.

Filmmakers Ilisa Barbash and Lucien Castaing-Taylor discuss the making of "Sweetgrass." They describe the difficulties that came with filming a sheep drive through mountains, as well as their distinctive aesthetic choices for the film.

In this clip from "Sweetgrass," bucks are castrated, their tails are cut (docked), and the ends of their ears are cut to distinguish them from female lambs.

SWEETGRASS presents a riveting and poetic portrait of the American West just as one of its traditional ways of life dies out. Shot amidst the grandeur of Montana's Absaroka-Beartooth Wilderness, the film follows the last modern-day cowboys to lead their flocks of sheep up into the breathtaking and often dangerous mountains for summer pasture.

In this clip from "Sweetgrass," Lawrence mixes and matches orphan and newborn lambs with ewes in order to maximize the lactation efficiency of the mothers. After the birth of a newborn lamb, there is a 24-hour window to convince a ewe to raise another orphan lamb as her biological offspring.

In this clip from "My Perestroika," a group of Russians describe how they felt during the beginning of Gorbachev's perestroika. Openness and reform were ushered into the USSR and would become pivotal to the country's history.

Filmmaker Robin Hessman explains how she came to live in Russia for most of the 1990s and how her time there led her to make "My Perestroika." She describes searching for her subjects and her desire to tell a personal story of the Soviet Union rather than one that could be found in a history textbook.

In May 2011, Borya, Lyuba and Mark Meyerson visited New York City and attended a screening of "My Perestroika." Before the event, POV caught up with the family to ask a few questions about their visit.

"My Perestroika" is an intimate look at the last generation of Soviet children. Five classmates go from living sheltered childhoods to experiencing the hopes of Gorbachev's reforms and the confusion of the USSR's dissolution, to searching for their places in today's Moscow.

Russians remember the mass demonstrations that occurred in 1991 in response to an attempted coup of a group of Soviet hardliners against Mikhail Gorbachev's glasnost policy.

In this clip from "Kings of Pastry," the film introduces the institution of the Meilleurs Ouvriers de France, or MOF as a prestigious award given to the best craftsmen in France. President Sarkozy, who presides over the final ceremony, gives a speech emphasizing the work that goes into being a master craftsman.

Filmmakers Chris Hegedus and D A Pennebaker, along with "Mr. Chocolate," Jacques Torres, discuss the MOF competition and the making of "Kings of Pastry."